Automatic pipe or hose draining valve.



Patented July 28, 1914.

L. E. BOWSER. AUTOMATIC PIPE 0E HOSE DRAINING VALVE.

\ APPLICATION FILED OUT. 12, 1912.

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nnrrnn LAFAYETTE E. fdwsaa, or roar WAYNE, INDIANA, ASSIGNOR to s. r. sowszss, & COMPANY, me, or roar WAYNE, INDIANA.

AUTOMATIC PIPE 0R HOSE DEAINING VALVE.

T0 (ZZZ 20710711 it may concern Be it known that I, LAFAYETTE E. BoWSEn, a citizen of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, have invented certam new and useful improvements in Automatic Pipe or HoseDi-aining Valves, of which the followingis a specification.

My invention relates to automatic pipe or hose draining valves and has for its priuull object the provision of an improved valve which shall have means for automatically admitting air to drain a pipe or hose.

With the above and other objects in view this invention consists in the construction, combination and arrangement of parts, all as hereinafter more fully described, claimed, and illustrated in the annexed drawings, wherein:

Figure 1 is a vertical section through a.

portion of a liquid conveying system showing my invention, partly 1n section and partly in side elevation, attached to said system. Fig. 2 is a view taken approximately on the line 2-2 of Fig. 1, and is partly in horizontalsection and partly in plan view; that part of my invention shown in Fig. 1 is taken approximately on thev line 1-1 of Fig. 2.

My invention is wclladapted to he used in a liquid conveying system having a dam located at some point therein and where it is desired to drain the system from the dammed point onward,

Reference numeral 10 indicates an anti drip connection, having a dam, indicated at 10, in a liqiiid conveying system, and'll is a plug set preferably at the highest pointof the system adjacent the dam. In threaded engagement with plug 11 and depending within the anti-drip connection is a hollow member 12 carrying a hall 13. The member 12 is pierced or. bored as at 14 and communicates with the outer air through an aperture 15 in the plug 11 andwith the in-;

-terior of the liquid conveying system through its inner end which is enlarged, as at 16, into a seat for theball 13. The'hore ll ot the hollow member 12 extends downwardly from the aperture 15 adjacent the bottom of the member Where it turns horizontally for a short distance and then rises vertically to the seat 16; 'A slightcutting away of the under surface of the. plug 11, as at 13, gives room for the hallv 13% rise specification of Letters Patent.

Application filed October 12, 1912.

Fatenteol 91 nly 28, 1914, Serial No. 725,414.

from its seat 16 when necessary. Any ordinary form of pipe or hose is indicated at 17 and. is shown attached to and depending from the point adjacent the dam 16. At 20 is indicated the point at which the supply of liquid being conveyed enters the antidrip connection, and 21 shows the level of liquid after the supply has ceased to flow, and the process of draining is complete.

When liquid is flowing through the liquid conveying and. over the dam 10 the anti-drip conn ction and the depending discharge. pipe 17 are normally filled with liquid. When the supply liquid entering at the point 9.0 ceases, the liquid from the darn onward seeks to continue its fievvby lorcc of gravity and tends to create a vacuum at the highest point above the dam. This tendency to create a vacuum causes the atmospheric pressure to force the hall 13 up from its seat 18, thereby admitting air to the interior of the liquid conveying system which admits of the rapid draining of the system from the darn onward. The plug 11 is chambered as at 19, providing a space for the ready entrance of air into the system when the hall 13 from its seat 16. When the process of draining is complete the force of gravity draws the ball 13 back to its seat 16, thereby closing the connection between the interior oi the liquid conveying system and the outer air, and when the sup ply of liquid begins to flow again the pres sure of the liquid upon the hall 13 acts to seat the hall still more firmly.

'What I claim is:

1'. The combination in aliquid conveying system of a horizontal liquid supply pipe, an upbent terminal uponthe discharge end of said supply pipe, constituting the highest point in said system,.preventing gravityinduced flow of liquid from the supply pipe and past which liquid must be forced, a discharge pipe for the liquid'forced through the terminal, and an air valve communicating with the terminal and adapted -autoiat-ically to admit air to the terminal and discharge pipe when the forced flow of liquid ceases. I

2. The combination in aliquid conveying system of a horizontal supply pipe, an uphent terminal uponthe discharge end of said supply pipe, constituting the highest point in said system, preventing gravity induced flow of liquid from the supply pipe and past which liquid must be forced, a discharge In testimony whereof I have signed my pipe for the liquid forced through the tername to this specification, in the presence of 10 minal, and an air valve communicating with '0 subscribing witnesses.

the teriniirl :14: the highest point thereof T I ":1 5 and adapted autoinatlcaily to admit air to I LAFAX ETTE the terminal and discharge pipe when the \Vitnesses: forced flow of liquid through the system J. R. MATLACK;

ceases. L. W. THOMAS 

